<p>
	All editor actions - actions that can be performed with the diagram and its elements. 
	Some actions run editor commands (see org.dfl.plugin.editor.commands package)
</p>
<p>
 To add new action you have to: <br />
 1. implement class SelectionAction<br /> 
 2. register action in plugin editor:
 <pre> 
 	IAction action = new
 	TavernaTransitionEditAction(this);
  	getActionRegistry().registerAction(action);
  	getSelectionActions().add(action.getId()); 
  </pre>
 3. add action to context menu :<br />
 <pre>
	IAction action = getAction(TavernaTransitionEditAction.EDIT_TAVERNA); 
	if (action.isEnabled()) menu.appendToGroup(GEFActionConstants.GROUP_EDIT, action);
  </pre>
</p>